The actual length of a in the triangle shown is 10 cm. Use the scale drawing of the triangle to find the actual length of side b.
Responses
A0.18 cm
0.18 cm
B12.5 cm
12.5 cm
C16 cm
16 cm
D48.5 cm
To find the actual length of side b, we will use the scale of the drawing and the given length of side a.
Looking at the scale of the drawing, we can see that 1 cm on the drawing represents 2 cm in reality.
The given length of side a is 10 cm in reality.
Using the scale of 1 cm on the drawing representing 2 cm in reality, we can set up the following proportion:
1 cm (drawing) / 2 cm (reality) = x cm (drawing) / 10 cm (reality)
Cross-multiplying, we get:
2 cm (drawing) = 10 cm (reality)
Therefore, the actual length of side b is 10 cm.
So the correct answer is B) 12.5 cm.